← Back to dex
Trash exoplanet 13 EP

TOI-470 b

RA 94.0099° · Dec -25.0314° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 3 badges
13 pts · Trash
Trash 15 pts → Common
  • Confirmed exoplanet +5
  • Neptune-like +4
  • Found by TESS +4
Total score 13

2 more points to reach Common.

Badges

  • Confirmed exoplanet · +5
  • Neptune-like · +4
  • Found by TESS · +4

Trivia

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 11.2 you'll want a small backyard telescope.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around December — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 7.5 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.17
diameter km
55361.908
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2023
dist ly
425.5031
eq temp k
660
host star teff
5190
inclination
89.527
insolation
44.7551
mag
11.171
mass earth
17.4
name
TOI-470 b
orbital period days
12.1915
radius earth
4.34
semi major au
0.119
spect
G
sys num planets
1
sys num stars
1

About TOI-470 b

TOI-470 b is a trash exoplanet. It lies about 425.5 light-years from Earth, shines at apparent magnitude 11.17, has spectral type G and has an equilibrium temperature near 660 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 11.17, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-470 b is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why TOI-470 b is a trash exoplanet

TOI-470 b scores 13 points on Spacedle's rarity scale, which places it in the trash tier. Another 2 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Neptune-like and Found by TESS — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.